Systeminfos werden via mp3-Dateien in /system abgespielt.
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README.md
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README.md
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# ESMP3
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## What you need
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Please note: This list is a "things I used", neither
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"these are the best things for this stuff" nor "you
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can only use these things". But please be aware that
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using other stuff may lead to you having to make
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more or less easy modifications.
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Prizes are more or less the cheapest I could find on
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Aliexpress.
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| What? | For what? | Price (approx) |
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|-------|-----------|----------------|
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| ESP-32-WROOM-32D | Controlling everything | 4€ |
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| WS1053B on a PCB with SD card slot | Play the MP3 files; provide an SD card slot | 5€ |
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| MFRC522 | RFID reader | 1€ |
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| 5V Amplifier(s) (e.g. 2x PAM-8302) | Single-channel Amplifier | 2€ |
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| Speaker(s) matching your amp (e.g. 2pcs 4 Ohm 5W) | Enabling you to hear the sounds | 4€ |
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| RFID tags (ISO14443A) - e.g. 10 cards | You can also get Keyfobs or stickers | 4€ |
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| 4 buttons | Prev/Next track, Volume up/down | 1€ |
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You'all also need an SD card, some breadboard(s), jumper cables and a soldering iron.
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Also, some kind of box for the finished player.
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## How to connect
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Schematics coming soon...ish...
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## How to install
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Format your SD card with FAT32 and put files on it: Every album has
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to go into its own folder in the root of the SD card. Folders and files
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should not contain special characters (meaning stuff like äöüß). Spaces
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and dashes an alike are okay. Put the SD card into the SD card slot.
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Copy `include/config.sample.h` to `include/config.h`. Modify it to at
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least contain the correct login details for your WiFi.
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The code then should compile in PlatformIO without errors. Upload it
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to your ESP32. After that, upload static files using PlatformIO's task
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"Upload file system image".
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The serial console in PlatformIO should give you more or less useful
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messages about what's going on. There will also be a line saying
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"WiFi connected. IP address: xxx.xxx.xxx.xxx" when the connection to
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your WiFi succeeded.
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In your browser, enter "http://xxx.xxx.xxx.xxx/" (using the IP address)
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from above. From there you can define mappings between RFID tag IDs and
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folders on the SD card.
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## RFID-folder-mappings
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### Via webinterface
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To create a new mapping between an RFID tag and an folder, you can use
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the web interface. Click the button with the cogs icon. After putting
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your rfid tag on the reader (and possibly removing it again), its ID
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will be shown in the dialog. Click the button with the arrows behind
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the ID to start the mapping mode.
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The dialog showing all folders with media files will be shown. Click the
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button with the arrows behind the correct folder, to create the mapping.
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### Manually
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Mapping are stored on the SD card in the file `/_mapping.txt`. Every
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mapping goes on its own line. Lines should be separated by \n (Unix-
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style line endings); the last line should also end with a newline.
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Format of a line is `<RFID id>=<folder>`. RFID id is the UID of an
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RFID tag, expressed as 8 lowercase characters with leading 0 (if
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necessary). Folder is the foldername to play; starting with a slash and
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ending without one.
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A valid `_mapping.txt` could look like this:
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```
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1a2b3c4d=/Christmas Music Vol. 17
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003aab7f=/Let it go
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b691a22c=/Frozen Audiobook
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22cb6ae9=/Let it go
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```
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(Yes, more than one tag can map to a folder.)
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## Technical details
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### Ports
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| Device | Port | Connected to |
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| ------ | ---- | ------------ |
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| VS1053 | CS | 16 |
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| VS1053 | MISO | 19 |
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| VS1053 | MOSI | 23 |
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| VS1053 | SCK | 18 |
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| VS1053 | XCS | 4 |
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| VS1053 | XRESET | 0 |
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| VS1053 | XDCS | 2 |
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| VS1053 | DREQ | 15 |
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| RC522 | SDA | 17 |
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| RC522 | SCK | 18 |
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| RC522 | MOSI | 23 |
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| RC522 | MISO | 19 |
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| AMP_L | SD | 27 |
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| AMP_R | SD | 26 |
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| BTN_PREV | | 22 |
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| BTN_NEXT | | 33 |
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| BTN_VOL_UP | | 21 |
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| BTN_VOL_DOWN | | 32 |
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Buttons pull to GND if pushed -> Internal Pull-Up needed!
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### RFID tags
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The mapping of rfid tags to files uses the ID of the
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tag. A file called `_mapping.txt` in the root folder of
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the SD card defines the mappings between RFID tag ids and
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folders to play.
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The easiest way to create this file is to use the mapping
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functionality of the webinterface.
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#### Special modes
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You can also save data on the tags to further manipulate
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the system. Position of the data is irrelevant, the whole
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tag will be searched.
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Using `[random]` will play the files in a random order.
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`[random:2]` will randomize everything except the first 2
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files. This can be useful for having the favorite song of
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your kids playing, but after that getting a bit of randomness.
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Using `[lock]` will turn this key into a key for the locking
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mode. Scanning the tag enables locking mode. The next album
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started will keep running until the end. Removing the tag
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will be deactivated, as are the buttons for prev and next
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track. You can disable locking mode by again scanning the
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lock tag again.
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`[advent]` is used for christmas time. An album with this tag
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will only play in December. On December 1st, only track 1
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will play. On December 2nd, track 2 followed by track 1. On
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December 3rd, tracks 3, 1 and 2. From December 24th on, track
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24 followed by tracks 1-23. So your kid will get the "daily track"
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first, followed by all previous tags in the right order.
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#### API
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You can send commands to ESMP3 using three different ways:
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* Through a websocket connection to `ws://<IP>/ws`.
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* Through the serial console using an USB cable.
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* Via HTTP POST request to `http://<IP>/cmd`, having the
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command in the variable `cmd`.
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Supported commands are:
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| Command | Action |
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|---------|--------|
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| `play <PATH>` | Starts playing the given path. Path may be a path on the
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sd card or a http(s) URL of a webstream (direct links to mp3/4/ogg streams,
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PLS files, M3U files or podcast XML feeds are supported). |
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| `play` | Continues playing the previously played thing. |
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| `stop` | Stops playing. |
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| `volume=<X>` | Sets the volume to X (0-255). |
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| `track_prev` | Starts the previous track, if available. |
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| `track_next` | Starts the next track, if available. |
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| `track=<X>` | Starts playing track no. X of the currently playing album. |
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| `reset_vs1053` | Resets the VS1053 audio chip. |
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| `reboot` | Reboots ESMP3. |
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| `add_mapping=<ID>=<PATH>` | Adds a mapping between RFID card <ID> and path
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<PATH>. See `play` for valid path formats. |
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| `update` | Runs an update check. |
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| `debug=<0|1>` | Enables / disables debug messages. This value is persisted across reboots. |
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| `trace=<0|1>` | Enables / disables tracing messages. This value is also persisted across reboots. |
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## Audio files
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System messages are created using:
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* https://ttsmp3.com/
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* German / Vicki
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* "Dies ist ein Text.<break time="1s"/>"
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* Download as MP3.
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@ -27,5 +27,5 @@ class Controller {
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void play();
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void play(String rfid_id, bool shuffle=false);
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void stop();
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void eof_mp3();
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void eof_mp3(String info);
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};
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@ -134,6 +134,9 @@ void Controller::play(String rfid_id, bool shuffle) {
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play();
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} else {
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Serial.printf("There is no playlist for rfid_id %s\n", rfid_id.c_str());
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// This is working more or less, but downloading files is really, REALLY slow. (About 4 minutes for 10 MBytes).
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//download_album(rfid_id);
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audio.connecttoFS(SD, "/system/sys_unknown_card.mp3");
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}
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} else {
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if (!audio.isRunning()) {
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@ -150,6 +153,11 @@ void Controller::play() {
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audio.connecttoFS(SD, file.c_str(), current_playlist.get_current_time());
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} else if (file.startsWith("http")) {
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log_i("Playing URL %s via connecttohost", file.c_str());
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audio.connecttoFS(SD, "/system/sys_connecting.mp3");
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while (audio.isRunning()) {
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yield();
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audio.loop();
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}
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audio.connecttohost(file.c_str());
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}
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}
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@ -202,8 +210,12 @@ bool Controller::is_button_pressed(uint8_t pin) {
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return false;
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}
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void Controller::eof_mp3() {
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void Controller::eof_mp3(String info) {
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log_d("Handling eof. Keep playing until the file is finished.");
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while(audio.isRunning()) { audio.loop(); yield; }
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next_track();
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if (info.startsWith("sys_")) {
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log_d("File ending was a system audio file. Not running next_track.");
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} else {
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next_track();
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}
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}
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@ -94,6 +94,7 @@ void setup() {
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Serial.println("Setup finished.");
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audio.setVolume(12);
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audio.connecttoFS(SD, "/system/sys_ready.mp3");
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ftp.begin("", "");
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}
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@ -113,7 +114,7 @@ void audio_id3data(const char *info){ //id3 metadata
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}
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void audio_eof_mp3(const char *info){ //end of file
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Serial.print("eof_mp3 ");Serial.println(info);
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controller.eof_mp3();
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controller.eof_mp3(info);
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}
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void audio_showstation(const char *info){
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Serial.print("station ");Serial.println(info);
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